mining bitcoins manually

[Velkro]

I saw an article on the internet and it says we can mine bitcoins manually by hand written mathematical formula? if so how can I achieve the target of 1 -4 btc per year?

Its possible in theory only to show how this technology works
Used as example, to teach, to learn

[TechnoMusic]

Oh  mining by hand wow I even didnt know that this is possible.No my oppinion is that kind of mining is very bad because even some mining machines make us to lose because they have too low mining power.

[mvidetto]

Mining is a very complicated process. You need to solve math problems in order to earn BTC. Each math calculation becomes even more complicated and takes longer timer.